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Curb Mounted vs. Deck Mounted Skylight

Curb Mounted vs. Deck Mounted Skylights

Curb mounted vs. deck mounted skylights, we’ll help you determine which type of skylight is best for your home in this in depth comparison.

Skylights, an essential feature in modern home design, offer more than just a visual appeal. They illuminate interiors with natural light, enhancing the ambiance of a living space. In this realm, two predominant types stand out: curb-mounted and deck-mounted skylights. Each type brings a unique set of characteristics and installation methods, fitting different needs and roof types. Curb-mounted skylights, known for their ‘shoe box lid’ design, require a pre-built curb for installation. In contrast, deck-mounted skylights are directly attached to the roof deck, offering a lower profile and sleek integration.

This article delves into the specifics of these two popular types. We will explore their design features, installation requirements, and how they sit on your roof. Whether you’re considering a new installation or planning to replace an existent one, understanding these differences is crucial. It ensures that you choose a skylight that not only brightens your home but also aligns seamlessly with your roof’s architecture.

In the upcoming sections, we’ll break down the intricacies of curb-mounted and deck-mounted skylights. From the process of building a curb to the nuances of attaching a skylight to the roof deck, we aim to guide you through each step. By the end of this article, you’ll be equipped with the knowledge to make an informed decision about the type of skylight that best suits your home.

Curb-Mounted Skylights

Curb-mounted skylights, a popular choice for many homeowners, are renowned for their versatility and robust design. This type of skylight sits on top of a curb, much like a lid on a shoe box. The curb, essentially a raised frame, is built on the roof deck, creating a platform for the skylight.

Building the Curb

The construction of the curb is a critical step in the installation of a curb-mounted skylight. It involves using lumber to build a frame that will elevate the skylight above the plane of the roof. This elevation is not just for aesthetic purposes; it’s a crucial factor for effective water drainage and weatherproofing. The curb must be engineered to match the dimensions of the skylight, ensuring a snug fit.

Velux Adhesive Flashing Underlayment Roll ZOZ 216L

Installation Specifics

Once the curb is built, the skylight is fastened onto it. This process requires precision to ensure that the skylight is properly sealed and waterproof. Flashing kits, typically provided by skylight manufacturers like Velux, play a vital role here. They include custom-sized underlayments and other materials to create a watertight seal between the skylight and the curb. Proper installation is key to prevent leaks and ensure durability.

Advantages and Drawbacks of Curb Mount Skylights

Curb-mounted skylights are often chosen for their flexibility in accommodating custom sizes and types, including vented or fixed skylights. They are particularly suitable for flat roofs or those with a low pitch, where water pooling is a concern. However, the necessity to build a curb can add to the labor and material costs. Additionally, their higher profile can be a consideration for homeowners concerned about the aesthetic integration with their roof.

In conclusion, curb-mounted skylights offer a reliable and adaptable option for many homes. Their design allows for a wide range of customization, making them a versatile choice. However, the need for a curb and the associated installation requirements should be carefully considered before making a decision.

Deck Mounted Skylight Installed on Metal Roof with Flashing

Deck-Mounted Skylights

Deck mounted skylights offer a sleek, integrated look, making them a favored choice for many homeowners. Unlike their curb-mounted counterparts, these skylights attach directly to the roof deck, resulting in a lower profile that blends seamlessly with the roofline.

Installation Process

The installation of deck-mounted skylights is distinct in that it does not require a separate curb. Instead, these skylights are designed to sit flush with the roof deck, creating a streamlined appearance. The process involves cutting an opening in the roof deck around the roof opening, where the skylight frame is then fastened directly. This direct attachment method is crucial for stability and leak prevention.

Attaching to the Roof Deck

Attaching the skylight to the roof deck is a precise task. It requires a thorough understanding of the roofing structure to ensure proper alignment and fastening. Flashing kits, essential for waterproofing, are usually custom-designed for these installations. They include underlayments and other materials that work in tandem with the roof deck and skylight frame to prevent water ingress.

Advantages and Potential Drawbacks

One of the primary advantages of deck-mounted skylights is their low-profile design, which offers a more modern and aesthetically pleasing look. They are often easier to install than curb-mounted skylights, reducing labor costs. Additionally, they provide excellent waterproofing when installed with matching cladding and flashing kits. However, their suitability is often limited to specific roof types, particularly those with a sufficient pitch to allow for proper drainage. They may not be the best choice for flat or very low-pitched roofs.

In summary, deck mount skylights are an excellent option for those seeking a modern, integrated look with their roofing. Their installation, while seemingly straightforward, requires attention to detail, especially regarding waterproofing and attachment to the roof deck. When installed correctly, they offer a beautiful, functional addition to any home, enhancing the influx of natural light while maintaining the integrity of the roof’s design.

Comparison: Curb-Mounted vs. Deck-Mounted Skylights

When choosing between curb-mounted and deck-mounted skylights, understanding their differences is essential. Both types have unique installation processes, aesthetic impacts, and suitability for different roof types.

Installation Processes

Curb mount skylights require building a curb on the roof deck, onto which the skylight is then mounted. This process involves additional labor and materials, as the curb must be constructed before the skylight can be installed. On the other hand, deck mount skylights are installed directly onto the roof deck, eliminating the need for a separate curb. This often results in a simpler, quicker installation process, potentially reducing labor costs.

Aesthetic and Functional Differences

In terms of aesthetics, deck-mounted skylights typically offer a lower profile and a more integrated look with the roofline. They are designed to sit flush with the roof, providing a sleek, modern appearance. Curb-mounted skylights, with their raised profile, may be more visible and can alter the roof’s silhouette. However, this raised design can be advantageous for flat roofs or those with a low pitch, aiding in water drainage and reducing the risk of leaks.

Roof Type Suitability

The choice between wood curb mounted and deck mounted skylights often depends on the roof type. Curb-mounted skylights are generally more versatile, suitable for almost any roof, including flat or low-pitched roofs. Their design allows for effective water runoff, making them a safer option in these scenarios. Deck-mounted skylights are ideal for roofs with a sufficient pitch, as their direct attachment to the roof deck requires a certain angle for optimal water drainage.

In conclusion, the decision between curb-mounted and deck-mounted skylights hinges on several factors: the installation process, aesthetic preferences, and the type of roof on your home. Both offer unique advantages, and the right choice depends on your specific needs and circumstances.

EDL Flashing Kit for Velux VSE M04 Skylight

Flashing Differences Between Curb Mounted and Deck Mounted Skylights

Flashing is a critical component in skylight installation, ensuring that the unit is watertight and securely integrated with the roofing material. The flashing process varies significantly between curb-mounted and deck-mounted skylights, each requiring specific techniques and materials.

Flashing for Curb-Mounted Skylights

In curb-mounted skylights, flashing is applied around the base of the curb, where it meets the roof. This process often involves custom flashing kits, which include pieces designed to fit the specific profile of the curb and the roofing material, be it asphalt, shingle, or membrane. The flashing must cover the entire curb like a lid, ensuring that water is directed away from the skylight and down the roof. It’s crucial to use waterproof materials and techniques that align with the specific roof type. In many cases, a sealant or gasket is also applied to reinforce the waterproof barrier.

Flashing for Deck-Mounted Skylights

Deck-mounted skylights require a different approach. Since these skylights sit flush with the roof deck, the flashing is designed to integrate seamlessly with the roof’s surface. Flashing kits for deck-mounted skylights are engineered to match the skylight’s lower profile, ensuring a sleek and watertight integration. The flashing typically extends under the roofing material and up the sides of the skylight frame, creating a continuous barrier against water. Proper installation is crucial to prevent leaks, particularly where the skylight frame meets the roof deck. There are also self flashing skylight options for deck mounts.

Importance of Proper Flashing

Regardless of the type of skylight, proper flashing is crucial for preventing water ingress and ensuring the durability of the installation. Incorrectly installed flashing can lead to leaks, damage to the skylight, and potential harm to the interior of the home. Whether building a curb for a curb-mounted skylight or attaching a skylight directly to the roof deck, the flashing must be executed with precision, using the right materials and techniques for the specific skylight and roof type.

In summary, the flashing process for curb-mounted and deck-mounted skylights differs significantly, each tailored to the skylight’s design and the roof’s characteristics. Understanding these differences is key for a successful, leak-proof skylight installation, contributing to the overall health and longevity of your roof and home.

Curb Mount vs Deck Mount Skylight Cost

Cost Comparison: Curb Mount vs. Deck Mount Skylight

Understanding the cost implications of choosing between curb-mounted and deck-mounted skylights is crucial for homeowners. This comparison not only covers the initial installation expenses but also encompasses long-term maintenance and replacement costs.

Material and Installation Costs

Curb-mounted skylights typically involve higher material costs due to the necessity of building a curb. This includes the cost of lumber and other materials needed to construct a robust, waterproof curb. The labor for building and installing the curb can also add to the overall expense. In contrast, deck-mounted skylights often have lower initial material costs since they do not require a separate curb. However, the cost of custom flashing kits and engineered curbs, crucial for a watertight installation, should be considered.

Labor Costs

The labor cost for installing curb-mounted skylights can be higher due to the additional steps of building and sealing the curb. This process requires precision and expertise to ensure a leak-proof installation, which may involve higher labor rates. Deck-mounted skylights, with their more straightforward installation, typically incur lower labor costs. However, the expertise required to ensure a proper seal and attachment to the roof deck remains a crucial factor.

Long-term Maintenance and Replacement Costs

Long-term costs such as maintenance and potential replacement also differ between these two types. Curb-mounted skylights, with their raised profile, might be more prone to environmental wear and tear, potentially leading to higher maintenance costs. Deck-mounted skylights, with their integrated design, may offer better durability but could also require professional servicing to maintain the integrity of the seal with the roof deck.

Additional Considerations

Factors like the necessity for custom sizes, insulated glass panes, and the type of roofing material (asphalt, shingle, or membrane) can influence the cost. Additionally, the choice of skylight brand, like Velux, known for their quality and durability, can impact the overall investment.

In summary, while deck-mounted skylights may offer a lower initial cost, the long-term expenses related to maintenance and potential replacement should be considered. Conversely, curb-mounted skylights might have a higher upfront cost, but their adaptability to various roof types and custom sizes can provide value over time.

Choosing The Right Skylight for Your Home

Choosing the Right Skylight for Your Home

Selecting the appropriate skylight type – curb-mounted or deck-mounted – is a decision that impacts not only the aesthetics of your home but also its functionality and efficiency. Here are key factors to consider when making this choice:

Roof Type and Aesthetics

Your roof’s design plays a pivotal role in determining the suitable skylight type. For flat roofs or those with a low pitch, curb-mounted skylights are often the better option, thanks to their raised design and effective water runoff capabilities. Deck-mounted skylights, with their lower profile and sleek integration, are ideal for roofs with a sufficient pitch. Aesthetically, consider how the skylight will complement your home’s design. Deck-mounted skylights offer a modern look, while curb-mounted skylights might be more prominent and distinct.

Installation Requirements and Labor

Consider the installation process and the associated labor. Deck-mounted skylights typically require less labor, potentially reducing costs. However, the expertise needed to ensure proper attachment to the roof deck and waterproofing is crucial. For curb-mounted skylights, the labor involved in building the curb and ensuring a watertight seal is a significant factor.

Customization and Flexibility

Curb-mounted skylights offer more flexibility in terms of custom sizes and types. They can accommodate a range of options, from vented skylights for added ventilation to fixed models. Deck-mounted skylights may offer fewer customization options but are often preferred for their modern, integrated appearance.

Waterproofing and Thermal Sealing

The effectiveness of waterproofing and thermal sealing is crucial for the longevity and performance of the skylight. Flashing kits and underlayments play a vital role in this, regardless of the skylight type. Ensure that the chosen skylight comes with appropriate flashing kits and that the installation includes using waterproof materials and insulated glass panes for optimal performance.

Long-term Value and Maintenance

Consider the long-term value, including maintenance needs and potential replacement costs while installing a skylight. While curb-mounted skylights are typically more upkeep, their adaptability and robustness can offer long-term benefits. Deck-mounted skylights might have lower maintenance needs due to their integrated design, but ensuring a lasting seal with the roof is crucial.

In conclusion, the decision between curb-mounted and deck-mounted skylights hinges on several factors, including roof type, aesthetic preference, installation requirements, and long-term value. Careful consideration of these aspects will help you choose a skylight that not only enhances your home’s natural light but also complements its overall design and functionality.

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